Our 12" x 15" 6 Mil Clearzip(R) Lock Top Bags are used to seal super heavy weight products that provide puncture resistance protection for industrial parts, tools and more. 6 mil Clearzip(R) Lock Top bags are made from low density polyethylene and can be recycled. Reclosable 12" x 15" .004 plastic bags feature impressive clarity and make storage and organization simple for industrial, food service, and medical industry applications. 12 inch by 15 inch 6 mil Zipper Locking bags meet FDA/USDA requirements for use in food packaging and storage applications.